Google's multimodal AI assistant powered by Gemini 4 Carbon (Gemini Carbon 4), Gemini 4 Argon, and Gemini 3.8 Flash with a 1M-token context window and Workspace integration.
Search AI tools, categories, and leaderboards
Gradium records 55,266 monthly visits with +55.5% month-over-month growth and Freemium, Contact for Pricing pricing. OpenAI Platform records 234,678,639 monthly visits with -9.6% growth and Paid pricing.

Real-time voice AI APIs with 50 ms to first audio
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | gradium.ai | openai.com |
| Pricing Model | Freemium, Contact for Pricing | Paid |
| Monthly Visits | 55.27K (55,266) | 234.68M (234,678,639) |
| MoM Traffic Delta |
| +19.72K (+55.5%) |
| -24.78M (-9.6%) |
| Primary Market & Share | 🇺🇸 United States (34.1%) | 🇺🇸 United States (25.4%) |
|---|
| Direct Visits / mo | 14.51K | 105.1M |
|---|
| User Rating | 5 | 4.3 |
|---|
| Supported Platforms | Website | Website |
|---|

Real-time voice AI APIs with 50 ms to first audio
Text-to-speech, speech-to-text, and live speech-to-speech translation reach roughly 50 ms to first audio, tuned for conversational agents rather than batch processing.
Clone a voice from a short sample for everyday use, move up to pro cloning for production quality, or generate a brand-new voice from a text description.
WebSocket streaming, Python and Rust SDKs, custom vocabulary, semantic VAD, and code-switching support make integration straightforward for agent builders.
Phonon is Gradium's openly available TTS model that runs on-device for offline or privacy-sensitive deployments.

Enterprise developer platform and API for deploying GPT-6 Astra, Sol, Luna, and realtime multimodal agents.
Spanning GPT-6 Astra ($10/$50 per MTok), GPT-6.1 Sol ($2/$10), GPT-6.1 Terra ($1/$5), and GPT-6 Luna ($0.10/$0.50), all with a 1,050,000-token context window and 128K max output.
Tune thinking token budgets per API request across six granularity levels (`none`, `low`, `medium`, `high`, `xhigh`, `max`) to balance latency, accuracy, and cost.
Combine model inference with hosted web search, file search, function calling, and autonomous GUI computer-use actions in a single stateful API call.
Build ultra-low-latency multimodal voice agents billed per second ($0.05/minute) without rounding up to whole minutes.
Google's multimodal AI assistant powered by Gemini 4 Carbon (Gemini Carbon 4), Gemini 4 Argon, and Gemini 3.8 Flash with a 1M-token context window and Workspace integration.
Google's rapid prototyping IDE and developer API workbench for building multimodal applications with Gemini models.
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